Seiko Cal. 5684 - 420

This Quartz model from 1977 features a 45mm Hardlex-Coated Steel case. Powered by the 5684 caliber with 30j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-41ecadee02a6]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1977

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